Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phieu bo doi snippets" » "hieu bo doi snippets", "phieu o doi snippets", "thieu so doi snippets", "phieu bo di snippets", "phieu bo noi snippets", "phieu co doi snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("phieu bo doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phieu bo doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phieu bo doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phieu bo doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.